L78LR05D-LR-E

The L78LR05D-LR-E is a low-dropout voltage regulator designed for applications where tight regulation is required over a wide variation of temperature. This linear regulator is ideal for supplying current up to 40 mA. The 3-Pin SOT-89 package design is often used in consumer electronic applications.

The L78LR05D-LR-E utilizes a three-terminal non-synchronous design. This regulator has an adjustable output voltage of up to 5 V. It has a quiescent current of only 5 µA. This device has an input voltage range of 4.5 V to 16 V and a maximum dropout voltage of 1.5 V at a load current of 30 mA. The device also has built-in thermal shutdown protection.

The working principle of the L78LR05D-LR-E is based on a simple voltage regulator which uses two transistors, two capacitors and a resistor to regulate the output voltage. The transistors are used to control the output current, while the capacitors and the resistor form a low-pass filter which defines the output voltage. In order for the regulator to work properly, the voltage on the output terminals must remain constant. To do this, the transistors will adjust the current passing from the input to the output. This adjustment is based on the voltage difference between the output and the reference voltage. When the voltage difference is small, the current passing through the transistors increases, while when the voltage difference is high, the current passing through the transistors decreases.

The L78LR05D-LR-E is capable of providing a regulated output current of up to 40 mA and is suitable for many applications including switching regulators, digital power supplies and LED drivers. This regulator is designed for use in an industrial environment, but can also be used in consumer electronics applications such as LCD displays, portable equipment and battery-powered hand-held devices. The L78LR05D-LR-E is also a good choice for low-noise power supplies, as it has a very low noise output of 5 µVrms. The 3-pin SOT-89 package makes the device easy to use in a variety of applications.

Overall, the L78LR05D-LR-E is a compact and efficient linear voltage regulator which is ideal for a variety of applications, including those involving low-dropout and tight regulation requirements. With its low quiescent current, built-in thermal shutdown protection, and low-noise output, this device is suitable for any application which requires a reliable, efficient and long-lifespan power solution.